CN201054276Y - Fire prevention electrical wire - Google Patents

Abstract

The utility model relates to a fire proof wire, which can prevent fire hazard initiated due to an aged route, a short circuit or an over load, or can perform electric leakage proof function and fire proof function in the fire hazard, and can be a fire proof wire which can be energized in the fire hazard. The fire proof wire comprises two pieces of electro-conductive wires, a piece of earthing wire, and an outer sheath which can muffle the electro-conductive wires and the earthing wire into a whole. The utility model is characterized in that the outer sheath of the fire proof wire is a ring-shaped sheath made of flame-retardant plastics, a metal flame-retardant layer is arranged on the inner wall of the fire proof wire, non metal fire-resisting layers are arranged on the outer wall faces of the electro-conductive wires of the fire proof wire, and a metal oxidation resistant coating is arranged on the outer wall face of the earthing wire of the fire proof wire, thereby, the utility model solves the problem that the fire proof performance of the prior fire proof wire is bad, so as to lead the fire proof wire to be reliably used for lighting equipment, insulating equipment and cooling down equipment as well as other various electrical equipment applied in a palace, a temple, a guest house, a ball room, a supermarket, a hospital and a top grade residence with very strict fire proof requirement, or used for the wire layout of the route. Even if brushing up against the fire hazard, the fire proof wire of the utility model still can normally energize in the fire.

Description

Flame-proof wire

Technical field

The utility model relates to and a kind ofly is used for circuit such as audio frequency, warning, electrical equipment, machinery equipment, or is used for the flame-proof wire of line layout with the fire protecting performance that improves circuit; Particularly a kind of fire of causing because of aging circuit, short circuit or overload of preventing, even in fire, can play anticreep, fire prevention, and can in fire, continue the flame-proof wire of unimpeded circuit.

Background technology

Application number is 02228993.3 Chinese patent " cable of band protective wire "; it is made up of conductor wire core and the oversheath that they are tied together of two outsourcing insulations, and is provided with a ground protection line between the conductor wire core of two outsourcing insulations and oversheath.It has solved electric device or household electrical appliance and hinders charged for some reason and cause the person to be shocked by electricity, and perhaps the problem that suffers damage of equipment, circuit also can be avoided because of the unsafe problems that wiring error occurred in the electrical construction.But also there is following shortcoming in it: its fire protecting performance is poor, so it also can be lighted when the condition of a fire appears in aging circuit or surrounding enviroment, thus power failure, and the people that return in the evacuation bring the hidden danger of electric shock.

Fire prevention for electric wire itself, flame-proof wire also appears at present, the internal layer of this flame-proof wire also has a glass fibre with insulation, fire prevention and heat-blocking action pipe that interweaves, and makes it prevent the fire that causes because of aging circuit, short circuit or overload to a certain extent; But for the fire that occurs around it, then the fire protecting performance difference because of itself works the interruption of power supply of fighting at any time, thereby adds the danger of electric shock again to the people in the hedging.

Summary of the invention

The utility model is to overcome existing problem in the above-mentioned prior art, provide a kind of and not only when aging circuit, short circuit or overload, can not cause fire, and but self is fire-retardant and can make circuit continue the flame-proof wire of energising when fire appears in its periphery, characteristics such as also make it have simple and reasonable, easily manufactured simultaneously and cost is not high.

The utility model flame-proof wire, it comprises two conductor wires, an earth connection, and energy is with the wrap oversheath of one of conductor wire, earth connection, it is characterized in that: its oversheath is the annular cover of a flame retardant plastics, and its inwall has the layer of metal flame-retardant layer, have the nonmetal fireprotection layer of one deck on the outside wall surface of its conductor wire, have the layer of metal antioxidation coating on the outside wall surface of its earth connection.

The beneficial effects of the utility model: 1) the utility model by flame retardant plastics oversheath and the metal flame-retardant layer of interior band, in addition after the conductor wire of nonmetal fireprotection layer, make the utility model flame-proof wire have three layers of fireproof structure, thereby prevent the electric leakage or the fire that cause because of aging circuit, short circuit or overload effectively, make it can be widely used in the circuit of electric equipments such as illumination to the very strict all kinds of palaces of fire protection requirement, temple, hotel, dance hall, supermarket, hospital, high-end residential etc., insulation, cooling, or the reliable wiring of the circuit that is used to prevent fires; 2) by being arranged on the metal antioxidation coating that has thermal endurance and at high temperature still have big transmission capacity on the earth connection outside wall surface, make the utility model fire-retarding conducting line can be in the intensity of a fire normal power-up; After tested, it can be in the intensity of a fire normal power-up 2～4 hours; 3) the metal flame-retardant layer of band in flame retardant plastics that oversheath adopted in the utility model flame-proof wire and the oversheath, can from market, conveniently buy, and buy with the semi-finished product that the earth connection of the conductor wire of nonmetal fireprotection layer, band metal antioxidation coating all can be used as flame-proof wire, convenience, economy so draw materials are beneficial to the retrofit to existing flame-proof wire.

Description of drawings

Fig. 1 is the main cutaway view of the utility model flame-proof wire.

Label declaration among the figure: 1-conductor wire; The nonmetal fireprotection layer of 1a-; The 2-earth connection; 2a-metal antioxidation coating; The 3-oversheath; 3a-metal flame-retardant layer.

Embodiment

The present embodiment flame-proof wire, it comprises two conductor wires 1, an earth connection 2, and one with they all-in-one-piece oversheaths 3 of wrapping; Wherein oversheath 3 is annular covers of being made by the flame retardant plastics of environment-friendly type, and its inwall has layer of metal flame-retardant layer 3a; Have the nonmetal fireprotection layer 1a of one deck on the wall of the Outer cylindrical of conductor wire 1; Have layer of metal antioxidation coating 2a on the columniform outside wall surface of earth connection 2.

The material of the oversheath 3 in the present embodiment flame-proof wire is flame retardant plastics, and as flame-proof polyethylene (PE), fire-retardant polycarbonate (PC) etc., they can directly be buied from the market.The metal flame-retardant layer 3a of oversheath 3 inwalls is aluminium foil or Copper Foil; Adopt industrial heat-insulation fire prevention aluminum foil composite in the present embodiment, this material can be bonding synchronously when oversheath 3 moulding of flame retardant plastics, and do not need other coating adhesive; So not only avoided the pollution that produces because of binding agent, and bonding intensity improves greatly also.Metal flame-retardant layer 3a on the oversheath inner surface, it has not only improved the performance of the fire-retardant fireproof of oversheath 3, and can also further heat insulation resistance wet, thereby delay oversheath aging speed, improve its useful life.

The nonmetal fireprotection layer 1a that has on above-mentioned conductor wire 1 outside wall surface adopts nonmetal layer of silica gel; Conductor wire 1 with nonmetal fireprotection layer 1a in the present embodiment is the silica gel flame-proof wire of buying from the market, it directly becomes the semi-finished product of present embodiment flame-proof wire and conveniently makes, and it can also increase insulation property, humidity resistance, the resistance to elevated temperatures of conductor wire 1 except preventing fires.

The antioxidation coating 2a that has on above-mentioned earth connection 2 outside wall surface is a tin coating; The earth connection 2 of band anti-oxidation materials layer 2a in the present embodiment also is that the semi-finished product of directly buying, directly become the present embodiment flame-proof wire are from the market made with convenient.

Claims (1)

1. flame-proof wire, it comprises two conductor wires (1), an earth connection (2), and energy is with the wrap oversheath (3) of one of conductor wire (1), earth connection (2), it is characterized in that: its oversheath (3) is the annular cover of a flame retardant plastics, and its inwall has layer of metal flame-retardant layer (3a), have the nonmetal fireprotection layer of one deck (1a) on the outside wall surface of its conductor wire (1), have layer of metal antioxidation coating (2a) on the outside wall surface of its earth connection (2).

Images